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Applied Physics Letters / Volume 92 / Issue 3 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 92, 031103 (2008); http://dx.doi.org/10.1063/1.2827196 (3 pages)

Overlap integral factor enhancement using buried electrode structure in polymer Mach-Zehnder modulator

Reem Song and William H. Steier

Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA

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(Received 1 October 2007; accepted 2 December 2007; published online 23 January 2008)

A buried coplanar waveguide (CPW) electrode for a polymer modulator is introduced in this letter. In this configuration, the electric and the optical fields are aligned and the overlap factor is enhanced. Thus, the poling efficiency can increase and Vπ decreases. Using two electro-optic polymers, Mach-Zehnder (MZ) modulators based on the buried electrode are demonstrated and compared to the in-plane CPW based MZ modulators. The measured Vπ’s of the buried CPW MZ’s are 6.7 and 4.3 V for CLD1 and AJL8 devices, respectively, which give the overlap×r33 products of 19 and 30 pm/V. This shows 20% improvement in the overlap×poling efficiency by using the buried electrode.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

coplanar waveguides, electrochemical electrodes, electro-optical modulation, Mach-Zehnder interferometers, optical polymers

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2827196

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    D. Chen, H. R. Fetterman, A. Chen, W. H. Steier, L. R. Dalton, W. Wang, and Y. Shi, Appl. Phys. Lett. 70, 3335 (1997)APPLAB000070000025003335000001.

    H. Zhang, M.-C. Oh, A. Szep, W. H. Steier, C. Zhang, L. R. Dalton, H. Erlig, Y. Chang, D. H. Chang, and H. R. Fetterman, Appl. Phys. Lett. 78, 3136 (2001)APPLAB000078000020003136000001.

    Y. Enami, C. T. DeRose, C. Loychik, D. Mathine, R. A. Norwood, J. Luo, A. K.-Y. Jen, and N. Peyghambarian, Appl. Phys. Lett. 89, 143506 (2006)APPLAB000089000014143506000001.

    R. Song, A. Yick, and W. H. Steier, Appl. Phys. Lett. 90, 191103 (2007)APPLAB000090000019191103000001.


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